Loading…

Functionalized high-speed magnon-polaritons resulting from the magnetic antenna effect

Magnon-polaritons (MPs) refer to a light--magnon coupled state and can potentially act as information carriers, possibly enabling charge-free computation. However, the light--magnon coupling is inherently weak. To achieve sufficiently strong coupling, a large ferromagnet or coupling with a microwave...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2021-10
Main Authors: Kato, Kenta, Yokoyama, Tomohiro, Ishihara, Hajime
Format: Article
Language:English
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Magnon-polaritons (MPs) refer to a light--magnon coupled state and can potentially act as information carriers, possibly enabling charge-free computation. However, the light--magnon coupling is inherently weak. To achieve sufficiently strong coupling, a large ferromagnet or coupling with a microwave cavity is necessary. Herein, we theoretically propose a fundamental platform for magnonic and magnon--optical information storage devices and discuss the transport properties of MP's. The proposed multi-layered structure overcomes the aforementioned issues. Owing to the waveguide modes, magnons placed in a nanometer-thin layer are strongly coupled with light, exhibiting rich functionalities of thick-layer MPs via the `magnetic antenna effect'. Thus, the thin-layer MPs are faster, and the direction is switchable. The results of this study will enable the integration of ferromagnetic micro and nanostructures for MP-based information devices without any restrictions due to cavities.
ISSN:2331-8422
DOI:10.48550/arxiv.2110.08147